[OMPI users] OPEN MPI data transfer error

[Jack Bryan]

Hi, 
I am using open MPI to transfer data between nodes. 
But the received data is not what the data sender sends out . 
I have tried C and C++ binding . 
data sender:    double* sendArray = new double[sendResultVec.size()];
        for (int ii =0 ; ii < sendResultVec.size() ; ii++)      {               
sendArray[ii] = sendResultVec[ii];      }
        MPI::COMM_WORLD.Send(sendArray, sendResultVec.size(), MPI_DOUBLE, 0, 
myworkerUpStreamTaskTag);          data receiver:  double* recvArray = new 
double[objSize];
        mToMasterT1Req = MPI::COMM_WORLD.Irecv(recvArray, objSize, MPI_DOUBLE, 
destRank, myUpStreamTaskTag);

The sendResultVec.size() = objSize. 

What is the possible reason ? 

Any help is appreciated. 
thanks
jack
Oct. 22 1010